Yea, Ive used mylar on grows before, and ive found that flat white is just as effective if not moreso.

You should be able to find mylar at a hydro store if you have any, otherwise im sure you could find it somewhere like Michael's craft store or something.

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When someone asks 'Are you ticklish' it doesn't matter if you say yes or no, cause they're going to touch you. You should say something like 'I have diarrhea...and yes, I'm very ticklish' - Demetri Martin